Marcos had 15 coins in nickels and quarters. He had 3 more quarters than nickels. He wrote a system of equations to represent th

Question

3 years ago

5

Marcos had 15 coins in nickels and quarters. He had 3 more quarters than nickels. He wrote a system of equations to represent th

is situation, letting x represent the number of nickels and y represent the number of quarters. Then he solved the system by graphing. What is the solution?

Mathematics

1 answer:

Gwar [14] · Answer 1 · 2022-05-05T21:44:52+03:00

Gwar [14]3 years ago

8 0

Answer:

6 nickels and 9 quarters

Step-by-step explanation:

x- nickels

y- quarters

----------------

the 2 equations are:

x+y=15
y-x= 3

add up the 2 equations:

2y= 18
y=9

then

x= 15-9
x=6